In the domain of industrial process control, ubiquitous proportional–integral–derivative (PID) control paradigm, while foundational, is deemed insufficient amidst evolving complexities. alignment with China’s strategic “dual-carbon” targets, extant thermal power installations are mandated to facilitate profound peak load navigation and expedited frequency modulation services. The incumbent PID schema found wanting in this regard, precipitating imperative for an innovative technology supplant...

With the rise of charging level new energy vehicles, three-level half-bridge LLC topology is gradually applied to rear stage DC pile. This often adopts a hybrid control mode Pulse Frequency Modulation (PFM) and Phase Shift (PSM) obtain wide output range. However, PFM PSM can not meet Zero Voltage Switch (ZVS) inner tube at low voltage output. In order solve this problem, paper analyses conditions achieve ZVS, proposes Variable Burst (VFBM) maintain dead time minimum effective duty cycle,...

As complex, statically indeterminate structures, transmission towers are subject to complex forces and usually simplified into truss structures that only consider the effects of axial force. When load deformation a tower small, it is reasonable carry out analysis according linear elasticity theory. However, height an ultra-high voltage (UHV) significantly large, meaning calculation result current elastic method often has large deviation from actual stress structure. With influence bending...

This paper takes a half-through steel truss arch bridge as an example. A seismic analysis is conducted with nonlinear finite element method. Contrast models are established to discuss the effect of simplified method for main girder on accuracy result. The influence wave direction and wave-passage behaviors analysed well superstructure ring interaction which mostly related supported bearings wind resistant springs. In end, application cable-sliding aseismic devices discussed put forward...

We consider the problem of direct data-driven predictive control for unknown stochastic linear time-invariant (LTI) systems with partial state observation. Building upon our previous research on control, this paper (i) relaxes assumption Gaussian process and measurement noise, (ii) enables optimization gain matrix within affine feedback policy. Output safety constraints are modelled using conditional value-at-risk, enforced in a distributionally robust sense. Under idealized assumptions, we...

Abstract In DC microgrids, adaptive droop control is often used to allocate power between storage systems when using energy maintain the balance distributed generation units and loads. The introduction of can result in voltage dips at bus. To tackle this issue, paper presents an Adaptive Droop Control (ADC) strategy based on battery’s State Charge (SOC n ). This ensures that distribution battery charging discharging proportionate its SOC value, preventing bus drops. Additionally, proposes...

Flexure hinges as the displacement guiding and amplifying mechanism or sensing component are widely used for micro-actuators sensors. However, existing flexure hinges, leaf-spring notch type, cause serious stress concentration which severely weaken fatigue life of compliance mechanism. Therefore, developing long is very important high working frequency actuators sensors, such fast-tool-servo. Corner-fillet type hinge could provide large with lower stress. Stiffness expressions it both...

Bone damage is a common type of sport injury. The loading rate affects the fracture and degree soft tissue In view problem whole bone bending failure, this paper introduces test method bovine mechanism failure under different rates analyzed through experimental research theoretical analysis. results three-point are given influence on discussed. show that there three main deformation modes rates, namely mode high rate, shear medium local wedge low rate. With increase greater force applied...

We consider the problem of data-driven predictive control for an unknown discrete-time linear time-periodic (LTP) system known period. Our proposed strategy generalizes both Data-enabled Predictive Control (DeePC) and Subspace (SPC), which are established techniques time-invariant (LTI) systems. The approach is supported by extensive theoretical development behavioral systems theory LTP systems, culminating in a generalization Willems' fundamental lemma. algorithm produces results identical...

Severe fatigue and noise problems of modular bridge expansion joints (MBEJs) are often induced by vehicle loads. However, the dynamic characteristics single-support MBEJs have yet to be further investigated. To better understand vibration mechanism under loads, a 3D finite element model MBEJ with five center beams is built. Successive loads given out vertical responses each analyzed successive Dynamic amplification factors (DAFs) also calculated along increasing velocities from 20 km/h 120...

The speech-to-singing (STS) voice conversion task aims to generate singing samples corresponding speech recordings while facing a major challenge: the alignment between target (singing) pitch contour and source (speech) content is difficult learn in text-free situation. This paper proposes AlignSTS, an STS model based on explicit cross-modal alignment, which views variance such as different modalities. Inspired by mechanism of how humans will sing lyrics melody, AlignSTS: 1) adopts novel...

We propose a data-driven receding-horizon control method dealing with the chance-constrained output-tracking problem of unknown stochastic linear time-invariant (LTI) systems partial state observation. The proposed takes into account statistics process noise, measurement noise and uncertain initial condition, following an analogous framework to Stochastic Model Predictive Control (SMPC), but does not rely on use parametric system model. As such, our algorithm produces sequence closed-loop...

Abstract The tension-stiffening effect is very important for physical science, which has been widely used in MEMS, sensors and micro-motion stages. analytical solutions of the beam are extremely significant, consideration inefficiency finite element analysis (FEA) design optimization. Commonly, there three typical types boundary conditions (or stress-induced) beams, i.e., clamped-clamped, clamped-hinged, hinged-hinged. But only hinged-hinged an solution. Therefore, a method based on extended...